<template>
  <view>
   <view class="goods-list">
         <view v-for="(goods, i) in goodsList" :key="i" @click="gotoDetail(goods)">
           <my-goods :goods="goods"></my-goods>
         </view>
       </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        queryObj: {
          query: '',
          cid:'',
          pagenum: 1,
          pagesize: 10
          
        },
         // 商品列表的数据
            goodsList: [],
            // 总数量，用来实现分页
            total: 0,
             // 是否正在请求数据
                isloading: false
            
      };
    },
    onLoad(options){
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
        this.getGoodsList()
      
    },
    methods: {
       // 获取商品列表数据的方法
        async getGoodsList(cb) {
         try{
           this.isloading = true
           // 发起请求
           const { data: res } = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
           this.isloading = false
            cb && cb()
           // 为数据赋值
           this.goodsList = [...this.goodsList, ...res.message.goods]
           this.total = res.message.total
           
         }catch(err){
           uni.$showMsg()
         }
        },
        // 点击跳转到商品详情页面
        gotoDetail(item) {
         
          uni.navigateTo({
            url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
          })
        }
    },
    // 触底的事件
    onReachBottom() {
      if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
       if (this.isloading) return
      // 让页码值自增 +1
      this.queryObj.pagenum += 1
      // 重新获取列表数据
      this.getGoodsList()
    },
    // 下拉刷新的事件
    onPullDownRefresh() {
      // 1. 重置关键数据
      this.queryObj.pagenum = 1
      this.total = 0
      this.isloading = false
      this.goodsList = []
    
      // 2. 重新发起请求
      this.getGoodsList(() => uni.stopPullDownRefresh())
    }
  }
</script>

<style lang="scss">
  
</style>
